Measurement and Instrumentation The coil of a moving coil meter has 100 turns, is 40 mm long and 30 mm wide. The control torque is 240×10-6 N-m on full scale. If magnetic flux density is 1Wb/m2 range of meter is 3 mA. 2 mA. 1 mA. 4 mA. 3 mA. 2 mA. 1 mA. 4 mA. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Induction wattmeter can measure Both AC and DC Dc power only Ac power only None of the listed here Both AC and DC Dc power only Ac power only None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A 0 - 250V voltmeter has a guaranteed accuracy of 2% of full scale reading. What is the percentage of error if it measures 150V? 1% 5% 2% 3.33% 1% 5% 2% 3.33% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Purely mechanical instrument cannot be used for dynamic measurements because they have large time constant. All of these higher response time. high inertia. large time constant. All of these higher response time. high inertia. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The current coil of a wattmeter is connected to the CT of R-phase. The potential coil is connected across Y and B phases. The wattmeter measures Active power in R phase Reactive power of R phase Active power of Y phase Power proportional to 3 phase power if the load is balanced Active power in R phase Reactive power of R phase Active power of Y phase Power proportional to 3 phase power if the load is balanced ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A multirange instrument has Multiple shunt or series resistance inside the meter Variable turns of coil Multicoil arrangement Multirange meters inside the measurement system Multiple shunt or series resistance inside the meter Variable turns of coil Multicoil arrangement Multirange meters inside the measurement system ANSWER DOWNLOAD EXAMIANS APP
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